Hundreds of protesters and member of Anti-fa counter-demonstrators swarmed downtown Portland, Oregon over the weekend and police arrested at least 13 people, seizing seized metal poles, bear spray and other weapons. An independent journalist @Muffinpan503 was attacked & pepper sprayed by Antifa and another tries to calm the angry shirtless man but is told to mind her own business because she is a white person.

Warning: These videos are violent and probably not safe for the feint of heart.

Independent journalist @Muffinpan503 was attacked & pepper sprayed. A woman tries to calm the angry shirtless man following him but is told to mind her own business as a white person. pic.twitter.com/SeQb2A2gTX

Authorities closed bridges and streets to try to keep rival groups apart. The city’s mayor said the situation was “potentially dangerous and volatile,” and President Donald Trump tweeted “Portland is being watched very closely.”

As of early afternoon, most of the groups had left the area via a downtown bridge. Police used officers on bikes and in riot gear to keep black-clad, helmet- and mask-wearing antifa protesters from following them.

“I didn’t come to talk, I came to bring it out.” Things are getting tense at the antifa protest. Someone hit a man’s microphone to the ground.

I recognize this shirtless man from Seattle last year at another antifa protest. He came up to me and said, “Death is coming.” pic.twitter.com/mzK2i9y5Gl

A black man praises Jesus on a bullhorn. The shirtless protester yells at him: “Ain’t no f—ing white Jesus going to save the black man from the white man’s oppression, uncle Tom.”

One person was injured and transported via ambulance, and three other people were evaluated by medics, Portland Police spokeswoman Lt. Tina Jones said. The injuries were minor, she said.

Jones said at one point there were about 1,200 on the streets, but that number had fallen to about 400 late in the afternoon.

The events began late in the morning. Flag-waving members of the Proud Boys, Three Percenters militia group and others gathered downtown, some also wearing body armor and helmets. Police said they had seized the weapons, including shields, from multiple groups as they assembled along the Willamette River, which runs through the city.

More than two dozen local, state and federal law enforcement agencies, including the FBI, were in the city for the right-wing rally that was expected to draw people from across the country. Portland Police said all of the city’s 1,000 officers would be on duty for the gathering that was hyped on social media and elsewhere for weeks.

In the days leading up to the event, Portland Mayor Ted Wheeler said people who espoused hate or engaged in violence were “not welcome.”

In a Saturday morning tweet, Trump wrote: “Hopefully the Mayor will be able to properly do his job.”

He also wrote that “major consideration is being given to naming ANTIFA an ‘ORGANIZATION of TERROR.’”

But it wasn’t immediately clear what he meant by that as there’s no mechanism for the United States government to declare a domestic organization a terror group. The State Department maintains a list of designated foreign terrorist organizations, such as al Qaida, but there’s no comparable designation or list for American groups.

Wheeler responded to the president’s tweet in an interview with CNN, saying, “frankly, it’s not helpful.”

Wheeler added: “This is a potentially dangerous and volatile situation, and adding to that noise doesn’t do anything to support or help the efforts that are going on here in Portland.”

Not all who gathered Saturday were with right-wing groups or antifa. Also on hand were people dressed in colorful outfits and those who attended a nearby prayer service, holding signs that said slogans such as “No Trump, No NRA.”

Self-described anti-fascists had vowed to confront the rally, while leaders from the far right urged their followers to turn out in large numbers to protest the arrests of six members of right-wing groups in the run-up to the event.

Patriot Prayer’s Joey Gibson, who organized similar rallies in 2017 and 2018 that erupted in clashes, surrendered Friday on an arrest warrant for felony rioting. He was at a confrontation that broke out on May 1 outside a bar where antifa members had gathered after a May Day demonstration.